55165751 has 4 divisors (see below), whose sum is σ = 55345752. Its totient is φ = 54985752.

The previous prime is 55165729. The next prime is 55165757. The reversal of 55165751 is 15756155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55165751 - 2⁶ = 55165687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89540 + ... + 90153.

It is an arithmetic number, because the mean of its divisors is an integer number (13836438).

Almost surely, 2^55165751 is an apocalyptic number.

55165751 is a deficient number, since it is larger than the sum of its proper divisors (180001).

55165751 is a wasteful number, since it uses less digits than its factorization.

55165751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180000.

The product of its digits is 26250, while the sum is 35.

The square root of 55165751 is about 7427.3650105539. The cubic root of 55165751 is about 380.6768891181.

The spelling of 55165751 in words is "fifty-five million, one hundred sixty-five thousand, seven hundred fifty-one".